Abstract
AbstractThe rate of photochemical polymerization of styrenc (St) and methyl methacrylate (MMA) with polymcthylphenylsilane (PMPS) as initiator were measured. Polymethylphenylsilane is photodegraded to form silyl radicals that may initiate polymerization of St and MMA. The kinetic orders of polymerization reactions of initiator PMPS in St and in MMA systems are 0.49 and 0.29, respectively. The rate coefficients kp and kt are 38.1 and 0.71 × 107 Lmol‐−1s−1 in the St/PMPS system and 249.5 and 6.71 × 107 Lmol−1s−1 in the MMA/PMPS system. A polymerization reaction mechanism is proposed.
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